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3 years ago

Although incineration can break down harmful chemicals, the byproduct is hazardous.

Chemistry

2 answers:

cestrela7 [59]3 years ago

6 0

A, true is the answer and cluke u help me please

fredd [130]3 years ago

4 0

Answer: The given statement is true.

Explanation:

Incineration: It is a technique in which organic substance present in waste material is burned down to break them into its components.

For: Example : Burning of powder of wooden chips gives carbon dioxide gas ,nitrogen-dioxide in small amounts and heat energy.

Although incineration can break down harmful chemicals but the by-product formed are hazardous because:

Oxides of nitrogen and sulfurs are also released which pollutes the air and becomes the main cause for acid rains.
Green house gases are produced which disturbs the balance of atmosphere and climate.
Increases air pollution by which it becomes unfit to breathe in.
Also pollutes soil.

Hence, the given statement is true.

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Jon rides his bike for 10 minutes and travels 5 km. What is Jon's average speed?

Bogdan [553]

Answer:

Explanation:

It is 50 because 5×10=50

3 0

3 years ago

Read 2 more answers

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4

Anna71 [15]

Answer:

31.652g of Na3PO4

Explanation:

We'll begin by calculating the molarity of Na3PO4 solution. This can be achieved as shown below:

Na3PO4 will dessicate in solution as follow:

Na3PO4(aq) —> 3Na+(aq) + PO4³¯(aq)

From the balanced equation above,

1 mole of Na3PO4 produce 3 moles of sodium ion, Na+.

Therefore, xM Na3PO4 will produce 1.10M sodium ion, Na+ i.e

xM Na3PO4 = (1.10 x 1)/3

xM Na3PO4 = 0.367M

Therefore, the molarity of Na3PO4 is 0.367M.

Next, we shall determine the number of mole of Na3PO4 in the solution. This is illustrated below:

Molarity of Na3PO4 = 0.367M

Volume = 525mL = 525/1000 = 0.525L

Mole of Na3PO4 =..?

Molarity = mole /Volume

0.367 = mole /0.525

Cross multiply

Mole of Na3PO4 = 0.367 x 0.525

Mole of Na3PO4 = 0.193 mole.

Finally, we shall convert 0.193 mole of Na3PO4 to grams. This is illustrated below:

Molar mass of Na3PO4 = (23x3) + 31 + (16x4) = 164g/mol

Mole of Na3PO4 = 0.193 mole

Mass of Na3PO4 =.?

Mass = mole x molar mass

Mass of Na3PO4 = 0.193 x 164

Mass of Na3PO4 = 31.652g

Therefore, 31.652g of Na3PO4 is needed to prepare the solution.

6 0

3 years ago

The equilibrium constant for the formation of ammonia from nitrogen and hydrogen is 1.6 × 102. what is the form of the equilibri

Nimfa-mama [501]

Answer: The expression for equilibrium constant is $\frac{[NH_3]^2}{[H_2]^3[N_2]}$

Explanation: Equilibrium constant is the expression which relates the concentration of products and reactants preset at equilibrium at constant temperature. It is represented as $k_c$